Lin Xing is a doctor, but he was abandoned by his patient's family members and had no choice but to leave the operating table.
Xiao Su is an old bat demon who has lived for 88 million years, but he has watched his kind become endangered step by step.
The Xinglin Master and the Old Bat Demon join forces to take revenge on mankind. Where will the fate of mankind go?
Concept: Human beings and nature, good and evil in human nature